Xuefu Zhang created HIVE-6901:
---------------------------------
Summary: Explain plan doesn't show operator tree for the fetch
operator
Key: HIVE-6901
URL: https://issues.apache.org/jira/browse/HIVE-6901
Project: Hive
Issue Type: Bug
Components: Query Processor
Affects Versions: 0.12.0
Reporter: Xuefu Zhang
Assignee: Xuefu Zhang
Priority: Minor
Explaining a simple select query that involves a MR phase doesn't show complete
processor tree for the fetch operator.
{code}
hive> explain select d from test;
OK
STAGE DEPENDENCIES:
Stage-1 is a root stage
Stage-0 is a root stage
STAGE PLANS:
Stage: Stage-1
Map Reduce
Map Operator Tree:
...
Stage: Stage-0
Fetch Operator
limit: -1
{code}
It would be nice if the operator tree is shown even if there is only one node.
Please note that in local execution, the operator tree is complete:
{code}
hive> explain select * from test;
OK
STAGE DEPENDENCIES:
Stage-0 is a root stage
STAGE PLANS:
Stage: Stage-0
Fetch Operator
limit: -1
Processor Tree:
TableScan
alias: test
Statistics: Num rows: 8 Data size: 34 Basic stats: COMPLETE Column
stats: NONE
Select Operator
expressions: d (type: int)
outputColumnNames: _col0
Statistics: Num rows: 8 Data size: 34 Basic stats: COMPLETE Column
stats: NONE
ListSink
{code}
--
This message was sent by Atlassian JIRA
(v6.2#6252)
